Retail Joint Venture Retail Joint Venture Additional Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) ft²	Dec. 31, 2018 USD ($) ft²	Dec. 31, 2016 USD ($)
Variable Interest Entity [Line Items]
Net book value of assets and liabilities transferred to Retail Joint Venture		$ 31,800
Proceeds from Real Estate and Real Estate Joint Ventures	$ 180,000	217,000
Due from Joint Ventures, Noncurrent		75,000
Total assets		12,681,739	$ 13,216,269	$ 11,953,557
Total liabilities		11,603,389	11,401,480
Long-term Debt		9,628,626	9,423,100
Prepaid Expenses and Other Current Assets [Member]
Variable Interest Entity [Line Items]
Due from Joint Ventures, Noncurrent			$ 75,000
Other Noncurrent Assets [Member]
Variable Interest Entity [Line Items]
Due from Joint Ventures, Noncurrent		$ 72,500
Retail Joint Venture
Variable Interest Entity [Line Items]
Functional Area Square Footage | ft²			88,000
Functional area square footage under construction | ft²			74,000
Contribution of Property	$ 25,400
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		49.90%
Noncontrolling Interest in Joint Ventures		$ 292,000
Ownership Percentage			50.10%
Total assets		59,700	$ 85,000
Total liabilities		$ 900	619,600
Retail | Wynn Retail
Variable Interest Entity [Line Items]
Functional Area Square Footage | ft²		88,000
Retail | Retail Joint Venture
Variable Interest Entity [Line Items]
Long-term Debt			$ 611,100